Hi Francois,
yes, it refer to TCP flow control.
During TCP transmission, the receiver sends acknoledge packets  to the  
transmitter specifying the Usable Window Size as amount of data he can 
If Usable Window Size goes to 0 the transmission stops.
In my application, this condition is verified when the receiver is not 
able to process data immediately.
Usable Windows Size is progressively reduced until 0.
I'd like to stop transmission when this event occours.
How can I do to limit transission bitrate if speed is to high?
Emanuele Bizzarri

Francois PIETTE ha scritto:
>> Is it possible to detect TCP ZeroWindow by twsocket in order to stop
>> transmission?
> I don't know what "TCP zero window" is, but I'm almost sure you can't do 
> anything with it using ICS.
> Note that if this refer to TCP flow control, you have nothing to doto stop 
> transmission, it is automatically done by winsock.
> --
> http://www.overbyte.be


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